Original title: Excimer Laser-Induced CVD of Carbon Encapsulated Cobalt Nanoparticles
Authors: Fajgar, Radek ; Maryško, Miroslav ; Dřínek, Vladislav ; Kupčík, Jaroslav ; Šubrt, Jan
Document type: Papers
Conference/Event: ročník mezinárodní konference Nanocon 2011 /3./, Brno (CZ), 2011-09-21 / 2011-09-23
Year: 2011
Language: eng
Abstract: Decomposition of acetylene / Co(CO)(3)(NO)mixtures induced by excimer ArF laser pulses is an efficient technique for preparation of amorphous cobalt nanoparticles encapsulated in carbon. Vacuum heating up to 900 degrees C leads to crystallization the metal core. The cobalt core crystallizes in a face-centered cubic (beta) form as revealed by X-ray and electron diffraction techniques and carbon affords graphite outer part. Properties of the Co(core) - carbon(shell)nanocomposites were examined by spectroscopy and microscopy techniques. Magnetization studies revealed paramagnetic behavior of the as-prepared amorphous deposit and superparamagnetic behavior of the annealed samples.
Keywords: amorphous cobalt nanoparticles; carbon encapsulation; magnetic properties
Project no.: CEZ:AV0Z4072921 (CEP), CEZ:AV0Z4032918 (CEP), CEZ:AV0Z10100521 (CEP)
Host item entry: Sborník příspěvků, pp. 126-141, ISBN 978-80-87294-27-7

Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0226266

Permalink: http://www.nusl.cz/ntk/nusl-161503


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Research > Institutes ASCR > Institute of Chemical Process Fundamentals
Conference materials > Papers